Google Associate Cloud EngineerDeploying and implementing a cloud solutionMedium
A company is migrating a critical legacy application to Google Cloud. The application requires Block Storage with very low latency and high IOPS for its database, which is hosted on a single Compute Engine instance. The application is sensitive to performance fluctuations. Which storage option should you choose for the database disks?
- AExtreme persistent disk
- BStandard persistent disk
- CFilestore Basic HDD
- DBalanced persistent disk
Show answer & explanationAnswer & explanation
Correct answer: A. Extreme persistent disk
Extreme persistent disks are designed for high-performance workloads like databases, offering the highest IOPS and lowest latency among persistent disks, with provisionable IOPS.
Why the other options are wrong
- B. Standard persistent disks are HDD-based and offer lower performance, unsuitable for critical databases requiring low latency.
- C. Filestore is a network file storage service, not a block storage option for a Compute Engine instance's boot or data disk.
- D. Balanced persistent disks offer a good balance of performance and cost but may not meet the 'very low latency and high IOPS' requirement for critical databases.
Extreme Persistent Disk
A high-performance block storage option for Compute Engine instances, designed for demanding workloads requiring very low latency and high IOPS.
- Offers provisionable IOPS and throughput.
- Suitable for critical database workloads and high-performance analytics.
- SSD-based storage.
Memory trick: Persistent disks: Standard for savings, Balanced for general, Extreme for speed.